| 冯子龙,朱书华,惠旭龙.某型民机在不同地面环境下适坠性研究[J].装备环境工程,2025,22(2):20-30. FENG Zilong,ZHU Shuhua,HUI Xulong.Crash Worthiness of a Civil Aircraft in Different Ground Environments[J].Equipment Environmental Engineering,2025,22(2):20-30. |
| 某型民机在不同地面环境下适坠性研究 |
| Crash Worthiness of a Civil Aircraft in Different Ground Environments |
| 投稿时间：2024-10-26 修订日期：2024-11-21 |
| DOI：10.7643/issn.1672-9242.2025.02.003 |
| 中文关键词: 民用飞机 适坠性 乘员安全 结构失效 地面环境 飞行器设计中图分类号:V223+.2 文献标志码:A 文章编号:1672-9242(2025)02-0020-11 |
| 英文关键词:civil aircraft crashworthiness passenger safety structural failure ground environment aircraft design |
| 基金项目:航空科学基金(20230009052004) |
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| 中文摘要: |
| 目的 研究不同地面环境下的民机适坠性。方法 以某型民机中机身段为研究对象，基于动力学仿真软件 LS-Dyna 建立含航空座椅与假人的中机身段有限元分析模型，选取刚性、软质、硬质3种典型地面环境进行民机坠撞有限元仿真分析，从机体结构破坏、地面能量吸收及舱内乘员损伤情况等方面，系统研究不同坠撞环境民机适坠性。结果 地面环境刚度越高，民机坠撞损伤越严重，地面吸收能量与其变形量呈正相关。在6.1 m/s冲击下，由于货舱破坏与地面变形吸收冲击能量，舱内乘员并未出现超出损伤阈值的危险情况。其中乘员腰椎损伤程度最高，股骨损伤程度最低。结论 该型民机在6.1 m/s初速度下的适坠性较好，舱内乘员未发生严重损伤。地面刚度越低，对冲击能量的吸收效果越好，民机的适坠性越好。对舱内乘员而言，靠窗侧假人损伤情况整体低于靠走廊侧假人。 |
| 英文摘要: |
| The work aims to study the crashworthiness of civil aircraft in different ground environments. With the mid body section of a certain type of civil aircraft as the research object, a finite element analysis model of the mid body section containing aviation seats and dummies was established based on the dynamic simulation software LS-Dyna. Three typical ground environments, rigid, soft, and hard, were selected for a finite element simulation analysis of civil aircraft crashes. From the aspects of body structure damage, ground energy absorption, and cabin passenger damage, the worthiness of civil aircraft to different crash environments was systematically studied. The results indicated that the higher the stiffness of the ground environment, the more severe the impact damage of civil aircraft, and the energy absorbed by the ground was positively correlated with its deformation. Under a 6.1 m/s impact, due to the damage to the cargo hold and the absorption of impact energy by ground deformation, there was no danger of exceeding the damage threshold for the occupants inside the cabin. Among them, the passenger had the highest degree of lumbar injury and the lowest degree of femoral injury. This type of civil aircraft has good crash resistance at an initial speed of 6.1 m/s, and there are no serious injuries to the passengers inside the cabin. The lower the ground stiffness, the better the absorption effect of impact energy, and the better the crashworthiness of civil aircraft. For passengers in the cabin, the overall damage to the window side dummy is lower than that of the corridor side dummy. |
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